/* ===== 厦门寰商科技有限公司 - 官网样式 ===== */
:root {
    --primary: #1a56db;
    --primary-dark: #0f2d6e;
    --primary-light: #dbeafe;
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-card: #ffffff;
    --border: #e5e7eb;
    --shadow: 0 4px 24px rgba(26,86,219,0.08);
    --shadow-hover: 0 8px 40px rgba(26,86,219,0.15);
    --radius: 12px;
    --transition: all 0.3s ease;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
       color: var(--text); line-height: 1.7; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border); transition: var(--transition);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 700; color: var(--primary-dark); }
.logo-img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.logo svg { width: 40px; height: 40px; }
.nav { display: flex; gap: 32px; align-items: center; }
.nav a { font-size: 15px; color: var(--text); position: relative; padding: 4px 0; }
.nav a:hover, .nav a.active { color: var(--primary); }
.nav a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
                background: var(--primary); transition: var(--transition); }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav .btn { background: var(--primary); color: #fff; padding: 8px 20px; border-radius: 6px; font-size: 14px; }
.nav .btn:hover { background: var(--primary-dark); color: #fff; }
.nav .btn::after { display: none; }

/* ===== Hero ===== */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #0f2d6e 0%, #1a56db 50%, #3b82f6 100%);
    color: #fff; position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; max-width: 700px; }
.hero p { font-size: 18px; opacity: 0.9; max-width: 560px; margin-bottom: 36px; line-height: 1.8; }
.hero .btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .btns .btn-primary {
    background: #fff; color: var(--primary); padding: 14px 32px; border-radius: 8px;
    font-size: 16px; font-weight: 600; transition: var(--transition);
}
.hero .btns .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.hero .btns .btn-outline {
    border: 2px solid rgba(255,255,255,0.5); color: #fff; padding: 14px 32px;
    border-radius: 8px; font-size: 16px; font-weight: 600; transition: var(--transition);
}
.hero .btns .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }

/* ===== Stats ===== */
.stats-bar {
    background: var(--bg); border-bottom: 1px solid var(--border); padding: 32px 0;
}
.stats-bar .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-bar .item h3 { font-size: 36px; font-weight: 800; color: var(--primary); }
.stats-bar .item p { font-size: 14px; color: var(--text-light); margin-top: 4px; }

/* ===== Sections ===== */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { text-align: center; margin-bottom: 60px; }
.section-title h2 { font-size: 32px; font-weight: 700; color: var(--primary-dark); margin-bottom: 12px; }
.section-title p { font-size: 16px; color: var(--text-light); max-width: 600px; margin: 0 auto; }

/* ===== Features / Services ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-card {
    background: var(--bg-card); border-radius: var(--radius); padding: 36px 28px;
    box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-card .icon { width: 56px; height: 56px; border-radius: 12px;
    background: var(--primary-light); display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px; }
.feature-card .icon svg { width: 28px; height: 28px; stroke: var(--primary); fill: none; stroke-width: 2; }
.feature-card h3 { font-size: 20px; margin-bottom: 12px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== Service Flow ===== */
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.flow-step { text-align: center; padding: 32px 16px; position: relative; }
.flow-step .num { width: 48px; height: 48px; border-radius: 50%; background: var(--primary);
    color: #fff; font-size: 20px; font-weight: 700; display: flex; align-items: center;
    justify-content: center; margin: 0 auto 16px; }
.flow-step h4 { font-size: 16px; margin-bottom: 8px; }
.flow-step p { font-size: 13px; color: var(--text-light); }

/* =优势 ===== */
.advantages-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.advantage-item {
    display: flex; gap: 16px; padding: 24px; border-radius: var(--radius);
    background: var(--bg-card); border: 1px solid var(--border); transition: var(--transition);
}
.advantage-item:hover { box-shadow: var(--shadow); }
.advantage-item .check { flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%;
    background: #d1fae5; display: flex; align-items: center; justify-content: center; }
.advantage-item .check svg { width: 20px; height: 20px; stroke: #059669; fill: none; stroke-width: 2.5; }

/* ===== Cases ===== */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
    border: 1px solid var(--border); transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.case-card .body { padding: 24px; }
.case-card .body h4 { font-size: 18px; margin-bottom: 8px; }
.case-card .body p { font-size: 14px; color: var(--text-light); }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h3 { font-size: 24px; margin-bottom: 24px; }
.contact-info .item { display: flex; gap: 16px; margin-bottom: 20px; }
.contact-info .item .icn { width: 44px; height: 44px; border-radius: 10px;
    background: var(--primary-light); display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; }
.contact-info .item .icn svg { width: 20px; height: 20px; stroke: var(--primary); fill: none; stroke-width: 2; }
.contact-info .item .label { font-size: 12px; color: var(--text-light); }
.contact-info .item .value { font-size: 16px; font-weight: 500; }
.contact-form input, .contact-form textarea {
    width: 100%; padding: 14px 16px; border: 1px solid var(--border); border-radius: 8px;
    font-size: 15px; font-family: inherit; transition: var(--transition); margin-bottom: 16px;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light);
}
.contact-form textarea { height: 120px; resize: vertical; }
.contact-form button {
    background: var(--primary); color: #fff; border: none; padding: 14px 32px;
    border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; transition: var(--transition);
}
.contact-form button:hover { background: var(--primary-dark); }

/* ===== Footer ===== */
.footer {
    background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: 60px 0 32px;
}
.footer .grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer p { font-size: 14px; line-height: 1.8; }
.footer a { color: rgba(255,255,255,0.7); font-size: 14px; display: block; margin-bottom: 8px; }
.footer a:hover { color: #fff; }
.footer .copyright { margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center; font-size: 13px; }

/* ===== Subpage Hero ===== */
.sub-hero {
    padding: 140px 0 60px; background: linear-gradient(135deg, #0f2d6e, #1a56db);
    color: #fff; text-align: center;
}
.sub-hero h1 { font-size: 40px; font-weight: 800; margin-bottom: 12px; }
.sub-hero p { font-size: 18px; opacity: 0.9; max-width: 600px; margin: 0 auto; }

/* ===== Page content ===== */
.page-content { padding: 80px 0; }
.content-text { max-width: 800px; margin: 0 auto; }
.content-text h3 { font-size: 24px; color: var(--primary-dark); margin: 36px 0 12px; }
.content-text p { margin-bottom: 16px; color: var(--text-light); }
.content-text ul { padding-left: 24px; margin-bottom: 16px; }
.content-text ul li { margin-bottom: 8px; color: var(--text-light); }

/* ===== Timeline ===== */
.timeline { position: relative; padding-left: 32px; max-width: 700px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
    background: var(--border); }
.timeline-item { position: relative; margin-bottom: 36px; }
.timeline-item::before { content: ''; position: absolute; left: -32px; top: 4px;
    width: 14px; height: 14px; border-radius: 50%; background: var(--primary);
    border: 3px solid #fff; box-shadow: 0 0 0 2px var(--primary); }
.timeline-item .year { font-size: 14px; color: var(--primary); font-weight: 600; display: block; margin-bottom: 4px; }
.timeline-item h4 { font-size: 18px; margin-bottom: 6px; }
.timeline-item p { font-size: 14px; color: var(--text-light); }

/* ===== Mobile ===== */
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

@media (max-width: 768px) {
    .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff;
           flex-direction: column; padding: 16px 24px; gap: 16px; border-bottom: 1px solid var(--border); }
    .nav.open { display: flex; }
    .menu-toggle { display: flex; }
    .hero h1 { font-size: 32px; }
    .hero { padding: 120px 0 60px; }
    .features-grid, .advantages-grid, .cases-grid { grid-template-columns: 1fr; }
    .flow-grid { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer .grid { grid-template-columns: 1fr 1fr; }
    .stats-bar .grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stats-bar .item h3 { font-size: 28px; }
}